Mariano Zafra

The scientific evidence on how an infant develops, socializes and feeds offers multiple data to take into account about the psychomotor evolution of children

The Kremlin is trying to widen its eastern front but is coming up against Ukrainian resistance in every city it reaches

The Kremlin is focusing its attacks on the port city on the only refuge left for Ukraine’s soldiers and civilians: an enormous complex filled with industrial warehouses, rail tracks and subterranean tunnels

Moscow continued its attacks in the areas of Severodonetsk, Izyum, Mariupol and Kherson while it worked on ironing out logistical issues and reconstituting the forces it withdrew from Kyiv

Russia struck a crowded train station in Kramatorsk, killing over 30 and injuring more than 100, according to local authorities. The attack may be the start of a larger assault on the eastern Donbas region

The Russian invasion has lost its impetus and a series of setbacks has forced the Kremlin to reorganize its forces, raising questions about its military power

Two Ukrainian helicopters reportedly struck an oil depot in the Russian city of Belgorod, around 20 miles from the border

Ukrainian forces also attacked two Russian ships and an ammunition deposit in the occupied city of Berdyansk, putting Moscow’s troops on the defensive

Moscow’s military leaders are being forced to divert a large number of troops to defend their own supply lines, according to British intelligence reports

Surgical face coverings are not designed to contain infectious aerosols that accumulate in enclosed spaces. Experts recommend N95 masks, which are better fitted and have a higher filtration capacity

Taking a diagnostic kit after the onset of symptoms may not yield a positive result, while a negative one does not necessarily mean you are not infected; repeat testing is advisable if you suspect infection

The immunization of 3.26 million kids aged between five and 11 has begun. In this explainer, EL PAÍS looks at where the shots will be administered and how the process will be carried out

The Spanish island continues to experience earthquakes and lava flows, but there is already talk of “positive” developments that might mean the worst is over. Here’s how experts are interpreting the available data

Look up any place on this map to compare the scale of the devastation from the molten rock, which now covers more than 591 hectares

The magma flow that shaped Spain’s Canaries archipelago 20 million years ago continues to add landmass, while Fuerteventura and Lanzarote are destined to sink under the effects of erosion

Shots of the same area taken in 2020 and on Thursday of last week evidence how the lava flow is slowly swallowing up land and property on the Spanish island

The outbreak in California is the most closely researched of its kind so far during the pandemic. Analysis reveals the vulnerability of the classroom given the explosive spread of the delta variant of the coronavirus

A lack of maintenance, design errors, poorly executed construction and negligence all dominate the discussion after the accident this week. EL PAÍS analyzes the key factors

EL PAÍS compares the likelihood of developing a blood clot from the Janssen and AstraZeneca injections with the probability of suffering a serious case of the disease, according to each demographic

Constant ventilation and permanent control of CO₂ levels are two of the keys to avoiding transmission in closed rooms, as fresh air dilutes the infected particles

In Spain, the bathrooms of older buildings are connected through communal ducts that allow aerosol exchanges. Although not common, it is suspected that transmission may occur in specific circumstances

Swathes of the Iberian peninsula form part of a ‘hot zone’ for seismic activity due to the increasing proximity of tectonic plates, the impact this has on fault lines and the specific characteristics of the land

Infections are expected to spike over the holiday season, but there are ways to minimize the dangers. Find out what measures should be taken based on who you will be celebrating with and how

The diagnostic tool has become key to curbing transmission in the second wave as it quickly identifies positive cases, meaning they are isolated immediately and do not spread the virus

The health crisis is having an unexpected effect in some urban centers: motorists are losing space while cyclists are gaining it. EL PAÍS has examined how Spanish cities, as well as some in Europe and the Americas, are adapting their cycleways to the new mobility reality